Nox to Phot Converter
Convert nox to phots instantly. Free, bidirectional, and fully in-browser.
About this tool
Nox to Phot Converter
Convert nox to phots instantly. Free, bidirectional, and fully in-browser.
1 nox equals 1e-7 phots — enter any nox value to convert it to phots instantly. This Nox to Phot converter is a client-side tool: it applies a single multiplication (ph = nox × 1e-7) in your browser, updates the moment you type, and works in both directions — edit either field, or press swap, to convert phots back to nox. A reference table lists common nox values already converted, and nothing you enter is sent to a server.
How to use Nox to Phot Converter
- 1
Open Nox to Phot Converter on AltFTool — it loads instantly in your browser.
- 2
Type the value you want to convert into the Nox field.
- 3
Read the equivalent in phots in the result field, and copy it if needed.
- 4
Use the decimal-places slider for more or less precision, or press swap to convert phots to nox.
Why use Nox to Phot Converter
Instant, both ways
The result updates as you type, and the swap button flips the conversion to phot → nox without reloading.
Exact Illuminance math
The conversion uses the precise factor (ph = nox × 1e-7), so the number matches a manual calculation to the decimal places you choose.
Adjustable precision
A slider sets 0–10 decimal places, and very small or very large results switch to scientific notation instead of rounding to zero.
Private and free
Everything runs locally in your browser — no upload, no account, no limit on conversions.
Common use cases
- Converting a nox measurement to phots for a spec, listing, or report.
- Checking nox↔phot figures while comparing products, datasets, or documentation.
- Learning the nox-to-phot relationship from the worked formula and the common-value table.
Frequently asked questions
How many phots are in a nox?
One nox is 1e-7 phots. Multiply the nox value by 1e-7 to convert. For example, 10 nox = 1e-6 ph.
What is the formula to convert nox to phots?
ph = nox × 1e-7. This tool applies it automatically and shows a worked example: 10 nox = 1e-6 ph.
Can it convert phots back to nox?
Yes. Press the swap button, or type into the phot field, and the tool converts phots to nox using the inverse of the same relationship.
Is the conversion accurate?
It uses the standard illuminance definition (ph = nox × 1e-7), not a rounded approximation, so results are exact to the number of decimal places you select.
Does this work offline and stay private?
Yes. The converter is a browser-side script with no network calls: your values are never uploaded, and once the page has loaded it keeps working without a connection.
Embed this tool on your site
Add the Nox to Phot Converter widget to your blog or website — free, responsive, no signup. Just keep the “Widget by AltFTool” credit link visible.
<iframe src="https://www.altftool.com/embed/widget/nox-to-phots-converter"
title="Nox to Phot Converter — free AltFTool widget"
width="100%" height="640" style="border:0;border-radius:12px;overflow:hidden"
loading="lazy" referrerpolicy="no-referrer-when-downgrade" allow="clipboard-write"></iframe>
<p style="font-size:12px;margin:4px 0 0">Widget by <a href="https://www.altftool.com/tools/all/nox-to-phots-converter?utm_source=embed&utm_medium=widget" rel="nofollow">AltFTool — free online tools</a></p>